ignore score and weight in lucene search

[丁儒]

Hi, all
    Currently i'm using lucene. But i don't care the score and weight, i just 
need the documents meets the query. I tried some way to ignore the score, like 
rewrite TermQury, disable the TermWeight and TermScore, but there are a lot of 
queries, and this is  incompatible with QueryParser. Also i tried 
ConstantScoreQuery and tried to rewirte ConstantScoreQuery, but failed. So is 
there any way to ignore soce in search to speed up the search.
   
Thank you!!!